Molding-machine.



"P. WINTZ. .MOLDING MACHINE.

APPLICATION FILED AUG. 26, 1908.

. Patented Aug. 15, 1911.

3 SHEETSSHEET 1.

COLUMBIA PLANOGRAPH CK]. WASHINGTON. D. C.

P. WINTZ.

MOLDING MACHINE.

APPLICATION FILED AUG. 26, 1908.

Patented Aug. 15, 1911.

3 SHEETS-SHEET 2.

I? J Y COLUMBIA PLANOGRAPN CO WASHIN P. WINTZ.

MOLDING MACHINE.

APPLICATION rum) AUG. 26, 1908.

1,000,474 I Patented Aug. 15, 1911.

3 SHEETS-8H2]?! 3.

UNITED STATES PATENT OFFICE.

PHILIP WINTZ, F BURBANK, CALIFORNIA.

MOLDING-MACHINE.

Application filed August 26, 1908.

To all whom it may concern:

Be it known that I, PHILIP WINTZ, a

citizen of the United States of America, and

. of which the following is a specification.

In the use of concrete and cement and other similar building materials,it frequently is necessary to mold the same into the desired shape,especially where it is to be used in the building of walls and conduitsand other similar structures, all of which require a careful molding ofthe materials into certain arbitrary forms. It is very common, in workof this kind, to use lumber, in various ways, for keeping the cement orconcrete in place until the same has hardened sufliciently to standalone, and to then pull the lumber down and use itover again in thesuccessive formation of different sections of the work. Also, it hasbeen proposed to use molds made of metal plates that can be set up inplace, into which the soft concrete or cement can be run or tamped toform the desired structure, and which can then be taken apart to leavethe hardened material standing by itself. It will be seen, however, thatthese methods require a constant and continual building up and tearingdown, with a consequent loss of time and waste of money and materials.

The object of my invention is, therefore, the provision of a mold thatwill do the required work without the necessity of tearing down ortaking apart the elements thereof when the cement or concrete is hard,or sufficiently so to stand alone, and which can be released from thework by a simple adjustment or movement of the walls out of contact withthe material, thus leaving the mold intact and in condition to be movedbodily to another position and used again in the same manner.

To this and other useful ends, my invention consists in mattershereinafter set forth and claimed.

In the accompanying drawings, Figure 1 is a side elevation of a combinedconcrete mixing plant and conduit mold embodying the principles of myinvention. Fig. 2 is a detail sectional view of the knife or trimmerthat smoothes the bottom of the conduit as the machine moves along..Fig. 3 is a plan of the machine shown in Fig. 1.

Specification of Letters Patent.

Patented Aug. 15, 1911. Serial No. 450,284.

Fig. 4. is an enlarged sectional cross section on line 44: in Fig. 1.Fig. 5 is a rear end elevation of the mold on the same scale as Fig. 1.Fig. 6 is a detail sectional view, on a still larger scale, showing oneof the eccentric devices for adjusting the sides of the mold.

Thus illustrated, my invention comprises a body A having wheels aadapted to run on rails B laid in the bottom of the trench dug for theconduit. The said body has a pair of rearwardly extending parallel beamsC that carry the mold D, which latter is in the form of a short troughmade U-shape in cross section. Sheet metal is used for the sides cl,which are movable toward and away from each other, and for the bottom,there being a large opening cl in the bottom through which the concretecan be dumped and then tamped down in place. The sheet metal is carriedby vertical and cross braces (Z and d and by U-shaped inner ribs 6%, ofangle iron or other suitable material, as shown more clearly in Fig. 4.A transverse cross beam d connects the two beams C, and the lattersupport the said braces. Eccentric rods E are mounted'on said beams Cand provided with cranks e, the eccentric portions of said rods beingconnected by means of links 6' with the movable sides OZ, whereby thelatter can be moved slightly toward and away from each other. Thearrangement is such that the eccentrics are a little past the centerwhen the sides are in posit-ion for molding, thus insuring a lockingaction sufficient to prevent the pressure of the concrete from throwingthe walls inward. At its forward end the mold has a pair of lateralflanges F that form a sort of bulk head to stop the concrete, and whichare provided with sliding plates f that can be moved over against thesides of the trench to prevent the soft cement or concrete from escapingforward. The rivets'for these flanges must not extend below the pointsin the two sides where the same begin to curve, for otherwise theflexibility of said sides would be interfered with. "With thisconstruction, the concrete can be dumped between the movable sides 0?and the sides of the trench, and'more can then be dumped through thebottom of the mold; and when the concrete is sufliciently hard themachine can be moved forward, but not until the cranks e have beenoperated to pull the sides d away from the concrete, the

The said knife is followed by the heel g of the mold, and thus after thetrimming the concrete is pressed down to the required level. A shortdistance in rear of the mold,

and secured to the beams C, is a plasterer H I which is also U-shaped inform, being supported in alinement with the mold by As the machine movesalong, a workman can apply the plaster or finishing coat to the concretethrough the space between the mold D and Y hangers h attached to saidbeams.

the plasterer H, and the latter then smoothes the surface when themachine is given another step forward. Such forward move v ment of themold does not leave the fresh end of the conduit liable to fall away, asthe front end of the mold inclines to the rear, as shown in Fig. 1, thusgiving each batch of concrete a beveled or inclined end that will notfall down. Furthermore, this makes an end that can be chipped or brokenin an effective way to insure a good union or joint with the next batchor fill of cement.

It will be understood, of course, that any suitable means can beemployed for delivering the mixed concrete to the mold. As a matter offurther and special improvement, however, I provide the car body A witha concrete mixer I, of any suitable or approved form, and deliver theconcrete therefrom to the mold by means of a traveling bucket Jconstructed and operated in any suit-able manner. A boiler K and engineL are also mounted on the platform of the car, soas to furnish the powerfor operating the mixer, as well as for moving the machine forward. Thecar has a center pin or pivot a that permits the platform and beams C toswing laterally, thus enabling the machine to turn a corner. As shown,the bucket J travels on ways 7' that extend out rearwardly from theuprights a of the car body, and which are mounted to swing sidewise,thereby enabling the bucket to deliver the concrete to all points of themold. In this way the concrete mixing plant and the mold are all unitedand combined in a unitary and self-contained machine. The braces (ZandcZ hold the bottom of the mold in a rigid or stiff condition, but thesides can flex at or just above the points where the lower ends of thebraces (Z are joined thereto, thus insuring a hinge-like action for saidsides. 7

It is obvious, of course, that the mold may be embodied in a separatemachine by itself, and that the plasterer H may constitute anotherseparate machine. Also, it will be seen that the details of constructioncan be varied more or less without departing from the principles of myinvention. I do not, therefore, limit myself to the exact arrangementand construction shown and described.

It will be understood, of course, that the track B is laid in sections,and that each time the machine moves forward it is necessary to take upthe sect-ion immediately in advance of the mold, which latter can beembodied in different forms and given different shapes, depending on thecharacter of the work. As shown, it is used for making what is calledthe invert of a concrete conduit, but it may be given other shapes forother purposes, and for this reason the walls may be made to spring ormove either outward or inward to release the mold from the concrete.

What I claim as my invention is:

1. In a machine of the class described, a mold made U-shapein crosssection, provided with sides that are movable toward and away from eachother, means for moving the walls toward each other to release them fromthe material molded outside thereof, and a wheeled frame traveling onthe ground in advance of the mold to support the same for horizontal andendwise movement in the direction of the work, as set forth,

2. In a machine of the class described, a mold having inwardly andoutwardly movable walls, means for moving the walls toward each other torelease them from the material molded outside thereof, and a wheeledframe traveling on the ground in advance of the mold to support the samefor horizontal and endwise movement in the direction of the work, as setforth.

3. In a machine of the class described, a mold provided with movablesides, means for moving said sides to release them from the materialmolded in contact therewith, and a wheeled frame traveling on the groundin advance of the mold to support the same for horizontal and endwisemovement in the direction of the work, as set forth.

4. In a machine of the class described, a mold made U-shape in crosssection, provided with sides that are movable toward and away from eachother, means for moving the walls toward each other to release them fromthe material molded outside thereof, a concrete or cement mixingvplantmovable or portable with said mold and combined therewith to form aunitary and selfoontained mixing and molding machine, and delivery meansextending from said plant to said mold, said plant having a body uponthe rear end of which said mold is supported.

5. In a machine of the class described, a

mold having inwardly and outwardly movable walls, means for moving thewalls toward each other to release them from the material molded outsidethereof, a concrete or cement mixing plant movable or portable with thesaid mold and combined therewith to form a unitary and self-containedmixing and molding machine, and delivery means extending from said plantto said mold, said plant being disposed in front of the mold.

6. In a machine of the class described, a mold provided with movablesides, means for moving said walls to release them from the materialmolded in contact therewith, a concrete or cement mixing plant movableor portable with said mold and combined therewith to form a unitary andself-contained mixing and molding machine, and delivery means extendingfrom said plant to said mold, said plant adapted to travel in the ditchwith and ahead of the mold.

7. In a machine of the class described, a mold made U-shape incrosssection, provided with sides that are movable toward and away fromeach other, a fixed or rigid lower member connecting said sides, meansfor moving the walls toward each other to release them from the materialmolded outside thereof, and a plasterer disposed in position to followat a distance in rear of said mold.

8. In a machine of the class described, a sheet metal mold havinginwardly and outwardly flexible walls, means for moving the walls towardeach other to release them from the material molded outside thereof,means for moving the walls forward, after said walls are moved towardeach other, and a plasterer disposed in position to follow at a distancein rear of said mold.

9. In a machine of the class described, a sheet metal mold provided withflexible sides, means for moving said sides transversely away from thematerial molded in contact therewith, means for moving the wallsforward, after said walls are moved toward each other, and a plastererdisposed in position to follow at a distance in rear of said mold.

10. In a machine of the class described, a mold made U-shape in crosssection, provided with sides that are movable toward and away from eachother, means formoving the walls toward each other to release them fromthe material molded outside thereof, and means for moving the mold alongendwise, said mold having an opening in its bottom through which thematerial to be molded can be dumped, each time the mold is movedforward, and united with similar material extending down at the sides ofthe mold.

11. In a machine of the class described, a mold having inwardly andoutwardly movable walls, means for moving the walls toward each other torelease them from the material molded outside thereof, and means formoving the mold along endwise, said mold having an opening in its bottomthrough which the material to be molded can be dumped, each time themold is moved forward, and united with similar material extending downat the sides of the mold.

12. In a machine of the class described, a mold. provided with movablesides, means for moving said sides away from the material molded incontact therewith, and means for moving the mold along endwise, saidmold having an opening in its bottom through which the material to bemolded can be dumped, each time the mold is moved forward, and unitedwith similar material extending down at the sides of the mold.

13. In a machine of the class described, a mold made U-shape in crosssection, provided with sides that are movable toward and away from eachother, at their tops means for moving the walls toward each other torelease them from the material molded outside thereof, and means formoving the mold along endwise, said mold being provided with a front endwall that inclines toward the rear end of the mold, for the purpose setforth.

I 1 1. In a machine of the class described, a mold having inwardly andoutwardly movable walls, and means for moving the walls toward eachother to release them from the material molded outside thereof, andmeans for moving the mold along endwise, said mold being provided with afront end wall that inclines toward the rear end of the mold, for thepurpose set forth.

1-5. In a machine of the class described, a mold provided with movablesides, and means for moving said sides away from the material molded incontact therewith, and means for moving the mold along endwise, saidmold being provided with a front end wall that inclines toward the rearend of the mold, for the purpose set forth.

16. In a machine of the class described, a mold made U-shape in crosssection, provided with sides that are movable toward and away from eachother, means for moving the walls toward each other to release them fromthe material molded outside thereof, said mold being provided with atrimmer, and with a heel adapted to follow said trimmer.

17. In a machine of the class described, a mold having inwardly andoutwardly movable walls, means for moving the walls toward each other torelease them from the material molded outside thereof, said mold beingprovided with a trimmer, and with a heel adapted to follow said trimmer.

18. In a machine of the class described, a mold provided with movablesides, means for moving said walls to release them from the materialmolded in contact therewith, said mold being provided with a trimmer,and with a heel adapted to follow said trimmer.

19. In a machine of the class described, a mold made U-shape in crosssection, provided with sides that are movable toward and away from eachother, means for moving the walls toward each other to release them fromthe material molded outside thereof, said mold provided with an openingin its bottom, and with a trimming knife at the rear edge of saidopening.

20. In a machine of the class described, a mold having inwardly andoutwardly movable walls, means for moving the walls toward each other torelease them from the material molded outside thereof, said moldprovided with a feed opening in its bottom, and with a trimming knife atthe rear edge of said opening.

21. In a machine of the class described, a mold provided with movablesides, means for moving said walls to release them from the materialmolded in contact therewith, said mold provided with a feed opening inits bottom, and with a trimming knife at the rear edge of said opening.

22. In a machine of the class described, a mold made U-shape in crosssection, provided with sides that are movable toward and away from eachother at their upper edges, a fixed or rigid lower member connectingsaid sides, and means for moving the Walls toward each other to releasethem from the material molded outside thereof, said mold provided withrotary eccentric rods connected for operating the movable portions ofthe mold.

23. In a machine of the class described, a mold having inwardly andoutwardly movable walls, a rigid molding portion with which said wallsare flexibly connected, and means for moving the walls toward each otherto release them from the material molded outside thereof, said moldprovided with rotary eccentric rods connected for operating the movableportions of the mold.

24. In a machine of the class described, a mold provided with movablesides, a rigid molding portion with which said walls are flexiblyconnected, and meansfor moving said sides to release them from thematerial molded in contact therewith, said mold provided with rotaryeccentric rods connected for operating the movable portions of the mold.

25. In a machine of the class described, a mold made U-sha-pe in crosssection, provided with sides that are movable toward and away from eachother, a molding portion to which the sides are flexibly connected, andmeans for moving the walls toward each other to release them from thematerial molded outside thereof, said mold having its forward endprovided with laterally projecting plates for insuring against leakageof the material being molded, which plates are movable outwardly.

26. In a machine of the class described, a mold having inwardly andoutwardly movable walls, and means for moving the walls toward eachother to release them from the material molded outside thereof, saidmold having its forward end provided with sliding plates carried by saidmovable walls for insuring against leakage of the material being molded,the rear end of the mold being open.

27. In a machine of the class described, a mold provided with movablesides, means for moving said sides to release them from the materialmolded in contact therewith, and a rigid molding portion to which saidsides are flexibly connected, said mold having its forward end providedwith sliding plates carried by said movable walls for insuring againstleakage of the material being molded.

28. An apparatus for molding concrete work, comprising a traveling moldhaving a member with a substantially flat horizontally disposed moldingsurface and vertically disposed walls attached to the sides of suchmember, and traveling therewith as a part of the apparatus, the bottomof the mold being open, and said sides being flexible.

' 29. An apparatus for forming concrete work comprising a traveling moldhaving a feed opening for the reception of the body of the work, a topwall rearward of the feed opening to level off the body of the work, themold having asecond feed opening rearward of said top wall to receivethe top finish of the work, a second top wall rearward of the secondfeed opening to smooth and trowel the top finish, and flexible sides.

30. An apparatus for molding concrete work, comprising a travelingmoldhaving a member with a substantially flat horizontally disposed moldingsurface and vertically disposed walls attached to the sides of suchmember, and traveling therewith as a part of the apparatus, the bottomof the mold being open, a car traveling in front of said mold, to carrythe same, and means on said car for mixing and delivering concrete tosaid mold.

31. An apparatus for forming concrete work, comprising a traveling moldhaving a feed opening for the reception of the body of the work, a topwall rearward of the feed opening to level off the body of the work, themold having a second feed opening rearward to said top wall, to receivethe top finish of the work, and a second top wall rearward of the secondfeed opening to smooth and trowel the top finish, a car traveling infront of said mold, to carry the same, and means on said car for mixingSigned by me at Chicago, Illinois this and delivering concrete to Faidmold. 15th day of August 1908.

32. n apparatus for orming concrete Work, comprising a mold withflexible sides, PHILIP WINTZ' adapted to move along in the ditch, and aWitnesses: car traveling in the ditch ahead of said mold S. LEWIS, tosupport the latter. C. E. TAYLOR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of latents, Washington, D. G.

